R command execution at specific time from within R

Costas Vorlow <costas.vorlow <at> gmail.com> writes:

I am trying to write a code that executes an R command at specific time
intervals.

? want R to do that instead of the operating system.

Any help/pointer extremely welcome.

Don't do it.   Just rely on cron [if you're lucky enough to be on Linux 
or OS X]; else rely on Windows Scheduler.  

Write a simple script using RScript, schedule.  Thousands of people do the 
sample.  

Dirk

If you really have to do this within R (see Dirk's reply for other
options) then the tclTaskSchedule function in the tcltk2 package is
one option.  However this can be dangerous if you are using the same
instance of R while waiting.  You might accidentally change something
that affects or is affected by the scheduled code and create a hard to
find bug.


Another is just to use a repeat loop with Sys.sleep for the delays.
This will not allow you to use that instance of R for anything else.

Hello,

I am trying to write a code that executes an R command at specific time
intervals.

? want R to do that instead of the operating system.

Any help/pointer extremely welcome.

Thanks in advance,
Costas

        [[alternative HTML version deleted]]

______________________________________________
R-help at r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

Gregory (Greg) L. Snow Ph.D.
538280 at gmail.com